diff --git a/dev-java/slf4j-api/Manifest b/dev-java/slf4j-api/Manifest
new file mode 100644
index 0000000..ec7396f
--- /dev/null
+++ b/dev-java/slf4j-api/Manifest
@@ -0,0 +1 @@
+DIST slf4j-1.7.36.tar.gz 2276203 BLAKE2B 930de76047c694b4e566ba743ee90a2efb062358b03209137f686c4bf4ead122aa84c18b79615e5a67f1a890abdc1b8f70f62b7803f7b8e45c766ff8254836d4 SHA512 1384c771aa04d9d351854cf8ddeef66ee9f43df53890a05413c48c14cf1cb78a457bb4b2a6e2f064f1c1ab68b2eaa1d326fc03bb6b7c145915660a2c873692d0
diff --git a/dev-java/slf4j-api/metadata.xml b/dev-java/slf4j-api/metadata.xml
new file mode 100644
index 0000000..63520ba
--- /dev/null
+++ b/dev-java/slf4j-api/metadata.xml
@@ -0,0 +1,12 @@
+
+
+
+
+ java@gentoo.org
+ Java
+
+
+ http://www.slf4j.org/docs.html
+ http://www.slf4j.org/bug-reporting.html
+
+
diff --git a/dev-java/slf4j-api/slf4j-api-1.7.36.ebuild b/dev-java/slf4j-api/slf4j-api-1.7.36.ebuild
new file mode 100644
index 0000000..0669946
--- /dev/null
+++ b/dev-java/slf4j-api/slf4j-api-1.7.36.ebuild
@@ -0,0 +1,62 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# Skeleton command:
+# java-ebuilder --generate-ebuild --workdir . --pom pom.xml --download-uri https://github.com/qos-ch/slf4j/archive/v_1.7.36.tar.gz --slot 0 --keywords "~amd64 ~arm ~arm64 ~ppc64 ~x86" --ebuild slf4j-api-1.7.36.ebuild
+
+EAPI=8
+
+JAVA_PKG_IUSE="doc source test"
+MAVEN_ID="org.slf4j:slf4j-api:1.7.36"
+JAVA_TESTING_FRAMEWORKS="junit-4"
+
+inherit java-pkg-2 java-pkg-simple
+
+DESCRIPTION="The slf4j API"
+HOMEPAGE="https://www.slf4j.org"
+SRC_URI="https://github.com/qos-ch/slf4j/archive/v_${PV}.tar.gz -> slf4j-${PV}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="amd64 ~arm arm64 ppc64 x86"
+
+DEPEND="
+ >=virtual/jdk-1.8:*
+"
+
+RDEPEND="
+ >=virtual/jre-1.8:*
+"
+BDEPEND="app-arch/zip"
+
+DOCS=( LICENSE.txt ../README.md )
+
+S="${WORKDIR}/slf4j-v_${PV}/${PN}"
+
+JAVA_SRC_DIR="src/main/java"
+JAVA_RESOURCE_DIRS="src/main/resources"
+
+JAVA_TEST_GENTOO_CLASSPATH="junit-4"
+JAVA_TEST_SRC_DIR="src/test/java"
+
+JAVA_TEST_EXCLUDES=(
+ # java.lang.InstantiationException - not run by upstream anyway
+ "org.slf4j.helpers.MultithreadedInitializationTest"
+)
+
+src_prepare() {
+ default
+ java-pkg_clean
+}
+
+src_compile() {
+ java-pkg-simple_src_compile
+
+ # remove org/slf4j/impl/ from the jar file
+ zip -d ${PN}.jar org/slf4j/impl/\* || die "Failed to remove impl files"
+}
+
+src_install() {
+ default # https://bugs.gentoo.org/789582
+ java-pkg-simple_src_install
+}
diff --git a/dev-java/slf4j-ext/Manifest b/dev-java/slf4j-ext/Manifest
new file mode 100644
index 0000000..ec7396f
--- /dev/null
+++ b/dev-java/slf4j-ext/Manifest
@@ -0,0 +1 @@
+DIST slf4j-1.7.36.tar.gz 2276203 BLAKE2B 930de76047c694b4e566ba743ee90a2efb062358b03209137f686c4bf4ead122aa84c18b79615e5a67f1a890abdc1b8f70f62b7803f7b8e45c766ff8254836d4 SHA512 1384c771aa04d9d351854cf8ddeef66ee9f43df53890a05413c48c14cf1cb78a457bb4b2a6e2f064f1c1ab68b2eaa1d326fc03bb6b7c145915660a2c873692d0
diff --git a/dev-java/slf4j-ext/metadata.xml b/dev-java/slf4j-ext/metadata.xml
new file mode 100644
index 0000000..6ef2d50
--- /dev/null
+++ b/dev-java/slf4j-ext/metadata.xml
@@ -0,0 +1,8 @@
+
+
+
+
+ java@gentoo.org
+ Java
+
+
diff --git a/dev-java/slf4j-ext/slf4j-ext-1.7.36.ebuild b/dev-java/slf4j-ext/slf4j-ext-1.7.36.ebuild
new file mode 100644
index 0000000..9f498c0
--- /dev/null
+++ b/dev-java/slf4j-ext/slf4j-ext-1.7.36.ebuild
@@ -0,0 +1,74 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# Skeleton command:
+# java-ebuilder --generate-ebuild --workdir . --pom pom.xml --download-uri https://github.com/qos-ch/slf4j/archive/v_1.7.36.tar.gz --slot 0 --keywords "~amd64 ~arm64 ~ppc64 ~x86" --ebuild slf4j-ext-1.7.36.ebuild
+
+EAPI=8
+
+JAVA_PKG_IUSE="doc source"
+MAVEN_ID="org.slf4j:slf4j-ext:1.7.36"
+# JAVA_TESTING_FRAMEWORKS="junit-4"
+
+inherit java-pkg-2 java-pkg-simple
+
+DESCRIPTION="Extensions to the SLF4J API"
+HOMEPAGE="https://www.slf4j.org"
+SRC_URI="https://github.com/qos-ch/slf4j/archive/v_${PV}.tar.gz -> slf4j-${PV}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="amd64 ~arm arm64 ppc64 x86"
+
+# Common dependencies
+# POM: pom.xml
+# ch.qos.cal10n:cal10n-api:0.8.1 -> >=dev-java/cal10n-0.8.1:0
+# commons-lang:commons-lang:2.4 -> >=dev-java/commons-lang-2.6:2.1
+# javassist:javassist:3.4.GA -> >=dev-java/javassist-3.18.2:3
+# org.slf4j:slf4j-api:1.7.36 -> >=dev-java/slf4j-api-1.7.36:0
+
+CP_DEPEND="
+ dev-java/cal10n:0
+ dev-java/commons-lang:2.1
+ dev-java/javassist:3
+ ~dev-java/slf4j-api-${PV}:0
+"
+
+# Compile dependencies
+# POM: pom.xml
+# test? junit:junit:4.13 -> >=dev-java/junit-4.13.2:4
+# test? org.slf4j:slf4j-reload4j:1.7.36 -> !!!artifactId-not-found!!!
+
+# slf4j-reload4j has further dependencies which are not available in ::gentoo.
+
+DEPEND="
+ >=virtual/jdk-1.8:*
+ ${CP_DEPEND}
+"
+
+RDEPEND="
+ >=virtual/jre-1.8:*
+ ${CP_DEPEND}"
+
+DOCS=( ../LICENSE.txt ../README.md )
+
+S="${WORKDIR}/slf4j-v_${PV}/${PN}"
+
+JAVA_SRC_DIR="src/main/java"
+JAVA_RESOURCE_DIRS="src/main/resources"
+
+# JAVA_TEST_GENTOO_CLASSPATH="junit-4,!!!artifactId-not-found!!!"
+# JAVA_TEST_SRC_DIR="src/test/java"
+# JAVA_TEST_RESOURCE_DIRS=(
+# "src/test/resources"
+# )
+
+src_prepare() {
+ default
+ java-pkg_clean
+}
+
+src_install() {
+ default # https://bugs.gentoo.org/789582
+ java-pkg-simple_src_install
+}
diff --git a/dev-java/slf4j-nop/Manifest b/dev-java/slf4j-nop/Manifest
new file mode 100644
index 0000000..ec7396f
--- /dev/null
+++ b/dev-java/slf4j-nop/Manifest
@@ -0,0 +1 @@
+DIST slf4j-1.7.36.tar.gz 2276203 BLAKE2B 930de76047c694b4e566ba743ee90a2efb062358b03209137f686c4bf4ead122aa84c18b79615e5a67f1a890abdc1b8f70f62b7803f7b8e45c766ff8254836d4 SHA512 1384c771aa04d9d351854cf8ddeef66ee9f43df53890a05413c48c14cf1cb78a457bb4b2a6e2f064f1c1ab68b2eaa1d326fc03bb6b7c145915660a2c873692d0
diff --git a/dev-java/slf4j-nop/metadata.xml b/dev-java/slf4j-nop/metadata.xml
new file mode 100644
index 0000000..6ef2d50
--- /dev/null
+++ b/dev-java/slf4j-nop/metadata.xml
@@ -0,0 +1,8 @@
+
+
+
+
+ java@gentoo.org
+ Java
+
+
diff --git a/dev-java/slf4j-nop/slf4j-nop-1.7.36.ebuild b/dev-java/slf4j-nop/slf4j-nop-1.7.36.ebuild
new file mode 100644
index 0000000..967f7b6
--- /dev/null
+++ b/dev-java/slf4j-nop/slf4j-nop-1.7.36.ebuild
@@ -0,0 +1,58 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# Skeleton command:
+# java-ebuilder --generate-ebuild --workdir . --pom pom.xml --download-uri https://github.com/qos-ch/slf4j/archive/v_1.7.36.tar.gz --slot 0 --keywords "~amd64 ~arm64 ~ppc64 ~x86" --ebuild slf4j-nop-1.7.36.ebuild
+
+EAPI=8
+
+JAVA_PKG_IUSE="doc source test"
+MAVEN_ID="org.slf4j:slf4j-nop:1.7.36"
+JAVA_TESTING_FRAMEWORKS="junit-4"
+
+inherit java-pkg-2 java-pkg-simple
+
+DESCRIPTION="SLF4J NOP Binding"
+HOMEPAGE="https://www.slf4j.org"
+SRC_URI="https://github.com/qos-ch/slf4j/archive/v_${PV}.tar.gz -> slf4j-${PV}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="amd64 ~arm arm64 ppc64 x86"
+
+# Common dependencies
+# POM: pom.xml
+# org.slf4j:slf4j-api:1.7.36 -> >=dev-java/slf4j-api-1.7.36:0
+
+CP_DEPEND="
+ ~dev-java/slf4j-api-${PV}:0
+"
+
+DEPEND="
+ >=virtual/jdk-1.8:*
+ ${CP_DEPEND}
+"
+
+RDEPEND="
+ >=virtual/jre-1.8:*
+ ${CP_DEPEND}"
+
+DOCS=( LICENSE.txt ../README.md )
+
+S="${WORKDIR}/slf4j-v_${PV}/${PN}"
+
+JAVA_SRC_DIR="src/main/java"
+JAVA_RESOURCE_DIRS="src/main/resources"
+
+JAVA_TEST_GENTOO_CLASSPATH="junit-4"
+JAVA_TEST_SRC_DIR="src/test/java"
+
+src_prepare() {
+ default
+ java-pkg_clean
+}
+
+src_install() {
+ default # https://bugs.gentoo.org/789582
+ java-pkg-simple_src_install
+}
diff --git a/dev-java/slf4j-simple/Manifest b/dev-java/slf4j-simple/Manifest
new file mode 100644
index 0000000..ec7396f
--- /dev/null
+++ b/dev-java/slf4j-simple/Manifest
@@ -0,0 +1 @@
+DIST slf4j-1.7.36.tar.gz 2276203 BLAKE2B 930de76047c694b4e566ba743ee90a2efb062358b03209137f686c4bf4ead122aa84c18b79615e5a67f1a890abdc1b8f70f62b7803f7b8e45c766ff8254836d4 SHA512 1384c771aa04d9d351854cf8ddeef66ee9f43df53890a05413c48c14cf1cb78a457bb4b2a6e2f064f1c1ab68b2eaa1d326fc03bb6b7c145915660a2c873692d0
diff --git a/dev-java/slf4j-simple/metadata.xml b/dev-java/slf4j-simple/metadata.xml
new file mode 100644
index 0000000..63520ba
--- /dev/null
+++ b/dev-java/slf4j-simple/metadata.xml
@@ -0,0 +1,12 @@
+
+
+
+
+ java@gentoo.org
+ Java
+
+
+ http://www.slf4j.org/docs.html
+ http://www.slf4j.org/bug-reporting.html
+
+
diff --git a/dev-java/slf4j-simple/slf4j-simple-1.7.36.ebuild b/dev-java/slf4j-simple/slf4j-simple-1.7.36.ebuild
new file mode 100644
index 0000000..7be81d7
--- /dev/null
+++ b/dev-java/slf4j-simple/slf4j-simple-1.7.36.ebuild
@@ -0,0 +1,77 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# Skeleton command:
+# java-ebuilder --generate-ebuild --workdir . --pom pom.xml --download-uri https://github.com/qos-ch/slf4j/archive/v_1.7.36.tar.gz --slot 0 --keywords "~amd64 ~arm ~arm64 ~ppc64 ~x86" --ebuild slf4j-simple-1.7.36.ebuild
+
+EAPI=8
+
+JAVA_PKG_IUSE="doc source test"
+MAVEN_ID="org.slf4j:slf4j-simple:1.7.36"
+JAVA_TESTING_FRAMEWORKS="junit-4"
+
+inherit java-pkg-2 java-pkg-simple
+
+DESCRIPTION="SLF4J Simple binding"
+HOMEPAGE="https://www.slf4j.org"
+SRC_URI="https://github.com/qos-ch/slf4j/archive/v_${PV}.tar.gz -> slf4j-${PV}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="amd64 ~arm arm64 ppc64 x86"
+
+# Common dependencies
+# POM: pom.xml
+# org.slf4j:slf4j-api:1.7.36 -> >=dev-java/slf4j-api-1.7.36:0
+
+CP_DEPEND="
+ ~dev-java/slf4j-api-${PV}:0
+"
+
+# Compile dependencies
+# POM: pom.xml
+# test? junit:junit:4.13 -> >=dev-java/junit-4.13.2:4
+# test? org.slf4j:slf4j-api:1.7.36 -> >=dev-java/slf4j-api-1.7.36:0
+
+DEPEND="
+ >=virtual/jdk-1.8:*
+ ${CP_DEPEND}
+ test? (
+ ~dev-java/slf4j-api-${PV}:0
+ )
+"
+
+RDEPEND="
+ >=virtual/jre-1.8:*
+ ${CP_DEPEND}"
+
+DOCS=( LICENSE.txt ../README.md )
+
+S="${WORKDIR}/slf4j-v_${PV}/${PN}"
+
+JAVA_SRC_DIR="src/main/java"
+JAVA_RESOURCE_DIRS="src/main/resources"
+
+JAVA_TEST_GENTOO_CLASSPATH="junit-4,slf4j-api"
+JAVA_TEST_SRC_DIR="src/test/java"
+JAVA_TEST_RESOURCE_DIRS="src/test/resources"
+
+JAVA_TEST_EXCLUDES=(
+ # java.lang.InstantiationException
+ "org.slf4j.helpers.MultithreadedInitializationTest"
+
+ # java.lang.AssertionError: 1284 < 1263+16
+ "org.slf4j.helpers.SimpleLoggerMultithreadedInitializationTest"
+)
+
+src_prepare() {
+ default
+ java-pkg_clean
+ cp {../slf4j-api/,}src/test/java/org/slf4j/helpers/MultithreadedInitializationTest.java || die
+ cp {../slf4j-api/,}src/test/java/org/slf4j/LoggerAccessingThread.java || die
+}
+
+src_install() {
+ default # https://bugs.gentoo.org/789582
+ java-pkg-simple_src_install
+}